參數(shù)資料
型號(hào)： SE98ATP,547
廠商： NXP Semiconductors
文件頁(yè)數(shù)： 18/43頁(yè)
文件大?。?/td> 849K
描述： IC TEMP SENSOR DDR 8-HWSON
產(chǎn)品培訓(xùn)模塊： I²C Bus Fundamentals
標(biāo)準(zhǔn)包裝： 1
功能： 溫度監(jiān)控系統(tǒng)（傳感器）
傳感器類型： 內(nèi)部
感應(yīng)溫度： -40°C ~ 125°C
精確度： ±4°C（最小值）
拓?fù)洌?/td> ADC（三角積分型），寄存器庫(kù)
輸出類型： I²C?/SMBus?
輸出警報(bào)： 是
輸出風(fēng)扇： 是
電源電壓： 1.7 V ~ 3.6 V
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 8-WFDFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 8-WSON
包裝： 標(biāo)準(zhǔn)包裝
產(chǎn)品目錄頁(yè)面： 847 (CN2011-ZH PDF)
其它名稱： 568-4731-6
SE98A_4
?NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04  25 November 2009
18 of 43
NXP Semiconductors
SE98A
DDR memory module temp sensor, 1.7 V to 3.6 V
8.3  Configuration register (01h, 16-bit read/write)
 
 
Table 8.
Configuration register (address 01h) bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
RFU
HEN[1:0]
SHMD
Default
0
0
0
0
0
0
0
0
Access
R
R
R
R
R
R/W
R/W
R/W
Bit
7
6
5
4
3
2
1
0
Symbol
CTLB
AWLB
CEVNT
ESTAT
EOCTL
CVO
EP
EMD
Default
0
0
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 9.
Configuration register (address 01h) bit description
Bit
Symbol
Description
15:11    RFU
reserved for future use; must be 0.
10:9
HEN
Hysteresis Enable
00  Disable hysteresis (default)
01  Enable hysteresis at 1.5 癈
10  Enable hysteresis at 3 癈
11  Enable hysteresis at 6 癈
When enabled, hysteresis is applied to temperature movement around trigger
points. For example, consider the behavior of the Above Alarm Window bit
(bit 14 of the Temperature register) when the hysteresis is set to 3 癈. As the
temperature rises, bit 14 will be set to 1 (temperature is above the alarm
window) when the Temperature register contains a value that is greater than
the value in the Alarm Temperature Upper Boundary register. If the
temperature decreases, bit 14 will remain set until the measured temperature
is less than or equal to the value in the Alarm Temperature Upper Boundary
register minus 3 癈. (Refer to Figure 6
 and Table 10
).
Similarly, the Below Alarm Window bit (bit 13 of the Temperature register) will
be set to 0 (temperature is equal to or above the Alarm Window Lower
Boundary Trip register) when the value in the Temperature register is equal to
or greater than the value in the Alarm Temperature Lower Boundary register.
As the temperature decreases, bit 13 will be set to 1 when the value in the
Temperature register is equal to or less than the value in the Alarm
Temperature Lower Boundary register minus 3 癈. Note that hysteresis is also
applied to EVENT
 pin functionality.
When either of the Critical Trip or Alarm Window lock bits is set, these bits
cannot be altered until unlocked.
8
SHMD
Shutdown Mode.
0  Enabled Temperature Sensor (default)
1  Disabled Temperature Sensor
When shut down, the thermal sensor diode and Analog-to-Digital Converter
(ADC) are disabled to save power, no events will be generated. When either of
the Critical Trip or Alarm Window lock bits is set, this bit cannot be set until
unlocked. However, it can be cleared at any time.
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